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Re: [STDS-802-16] [Relay TG][MPDU Construction Adhoc] 2nd teleconf minutes



Title: Message
Jeff,
The following is my comment on your discussion minutes.
 
Implicit transport CID with QoS semantic is considered harmful.
In .16j 06/026r3, it defined two transport CID mgmt approaches for data forwarding: Systematic CID (S-CID)
and Explicit CID (E-CID), where S-CID is a special type of source routing approach with embedded topology.
Let us assume a RS is implemented as "dual-mode" RS which supports both approaches. When this RS is roaming
between S-CID domain and E-CID domain, it should operate under each mode properly.
If one implements transport CID with implicit QoS semantic, during the handover, the integrity of CID semantic
have to be checked and matched between two modes. It will introduce more operation complexity/cost to implement this
semantic transformation in the system. As well, the over-split CID space (note that S-CID has split CID space already)
will put the limitation for handover procedure. For example, what if a target BS/RS has run out its transport CID space
for a particular QoS type?
With this regard, the explicit QoS processing via either in-band signaling (i.e., MAC header), or out-band signaling (i.e.,
DSx messaging) is a much better and simpler solution. It has no limitation for large-scale MMR network, and it is
also the typical approach we see in other networking technologies.
 
G.Q Wang
Nortel 


From: Jeffrey Tao [mailto:jeffrey.tao@GMAIL.COM]
Sent: Friday, April 13, 2007 2:31 PM
To: STDS-802-16@listserv.ieee.org
Subject: [STDS-802-16] [Relay TG][MPDU Construction Adhoc] 2nd teleconf minutes

Dear all:

Please find the attached minutes for the 2nd teleconf of Relay TG MPDU construction adhoc.

Best regards,

Jeff

_________________________________________
 
Jeffrey Z. TAO, Ph.D.
Member of Technical Staff
Mitsubishi Electric Research Laboratories (MERL)
201 Broadway, 8th floor
Cambridge, MA 02139
 
P 617.621.7557
F 617.621.7550
E tao@merl.com
_________________________________________